CN107891503A - A kind of environment-friendly sheet and preparation method thereof - Google Patents
A kind of environment-friendly sheet and preparation method thereof Download PDFInfo
- Publication number
- CN107891503A CN107891503A CN201711007140.1A CN201711007140A CN107891503A CN 107891503 A CN107891503 A CN 107891503A CN 201711007140 A CN201711007140 A CN 201711007140A CN 107891503 A CN107891503 A CN 107891503A
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- China
- Prior art keywords
- environment
- friendly sheet
- raw material
- adhesive
- agronomic crop
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/04—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N1/00—Pretreatment of moulding material
- B27N1/02—Mixing the material with binding agent
- B27N1/0263—Mixing the material with binding agent by spraying the agent on the falling material, e.g. with the material sliding along an inclined surface, using rotating elements or nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The invention provides a kind of environment-friendly sheet and preparation method thereof, the compacting raw material of environment-friendly sheet is to be made up of by weight percentage following components：Agronomic crop fibre no more than 90%, the adhesive no more than 6%, 1 10% filler and 1 10% quartz sand, agronomic crop fibre is one or more mixing in the crops containing fiber, formaldehyde is free of in adhesive and filler, water content is 3 5% in agronomic crop fibre, adhesive is MDI ecology adhesives, filler is diatomite, the crops containing fiber include rice bar, rape stalk, wheat head bar, cotton stalk, bamboo silk, are additionally provided with environment-friendly sheet and strengthen bamboo frame.Environment-friendly sheet produced by the present invention has the characteristics of cost is low, density is high, moistureproof, mould proof, fire-retardant.
Description
Technical field
The present invention relates to molding field of material technology, more particularly, to a kind of ring formaldehydeless, intensity is high, anti-mold effect is good
Protect sheet material and preparation method thereof.
Background technology
At present, manufacture the larger plant equipment of furniture, packaging quality, object, for interior/exterior decoration sheet sheet material or
The non bearing structure flaky material that building trade uses, is typically each used as stock using natural wood solid sheet.It is this kind of
Wooden sheet, if handling without insect prevention, protection against the tide and resistance to compression etc., easily cause to damage by worms.In addition, natural timber is largely used to house
For the industries such as tool, packaging and decorative architecture it is necessary to a large amount of disafforestations, this is totally unfavorable for greening and environmental protection.Moreover day
The defects of high use cost, quality weight, the deformation of easy flex-crack etc. are intrinsic also be present in right timber itself.
The natural fiber class material that natural timber can partly be substituted now is wood-based plate, and wood-based plate includes glued board, solid
The materials such as fiberboard, hollow cardboard.Wherein, glued board humidity resistance is poor；Solid fibre plate is non-moistureproof, yielding, and rigidity
Difference；Hollow cardboard, its moisture resistance is poor, without resistance to compression function, and purposes is single, only preferably makees wall hanging class non-bearing decoration and uses.
Common wood-based plate reaches adhesive effect using the adhesive of formaldehyde and urea synthesizing, although bonding property is excellent,
The formaldehyde that wherein dissociates causes IAQ to deteriorate, and grows healthy hidden danger to old children, weakling or pregnant woman.Therefore,
Environment-friendly sheet without formaldehyde is the demand of health of people, and the direction of Furniture panel development.
The content of the invention
It is an object of the invention to provide a kind of environment-friendly sheet and preparation method thereof, to solve plate present in prior art
The technical problem of material moisture-proof anticorrosive poor performance.
To achieve the above object, the invention provides following technical scheme：
A kind of environment-friendly sheet provided by the invention, the compacting raw material of the environment-friendly sheet is by weight percentage by with the following group
Divide and form：Agronomic crop fibre no more than 90%, the adhesive no more than 6%, 1-10% filler and 1-10% quartz sands,
The agronomic crop fibre is one or more mixing in the crops containing fiber, in described adhesive and the filler
Be free of formaldehyde.
Agronomic crop fibre can be a kind of crops composition or multiple kinds of crops composition, and crops not office
It is limited to rape straw, rice bar or other any crops with fiber；By the way that one or more crops are mixed
Close, then add and be free of the adhesive of formaldehyde, the filler that space between fiber is filled up on a small quantity and contribute to moisture retardant
Quartz sand, there is the formaldehydeless release of environmental protection, environment-friendly sheet moistureproof, mould proof, density is high so as to be formed.Be free of in this environment-friendly materials
A variety of hazardous solvents such as curing agent, shock resistance modification agent, cosolvent and releasing agent.
As a further improvement on the present invention, described adhesive is MDI ecology adhesives.MDI ecologies adhesive is free of first
Aldehyde, the content of adhesive are no more than 6%.MDI ecologies adhesive can be sufficiently mixed with agronomic crop fibre and improve agronomic crop fibre
Filling in raw material is suppressed.
As a further improvement on the present invention, the filler is diatomite.Diatomaceous effect can not only fill fibre
Space between dimension, and diatomite also have the function that it is mould proof, to ensure that it is mouldy that environment-friendly sheet will not make moist, raising use the longevity
Life.
As a further improvement on the present invention, the crops containing fiber include rice bar, rape stalk, the wheat head
Bar, cotton stalk, bamboo silk.
As a further improvement on the present invention, moisture is 3-5% in the agronomic crop fibre.Agronomic crop fibre reclaimed water
When point content is high, the environment-friendly sheet of compacting easily make moist it is mouldy, when moisture is too low in agronomic crop fibre, influence sheet material into
Type.Using the agronomic crop fibre of 3-5% moistures, the quantity of steam of release of the raw material in pressing process was both ensure that, again might be used
The problem of to avoid causing sheet material moisture-sensitive mouldy due to excess moisture.
As a further improvement on the present invention, the density of the environment-friendly sheet is 500-1300kg/m3.Due to using closing
Compression molding, and temperature is in 200-220 DEG C of scope when being molded, and obtained environment-friendly sheet density is high, and density high intensity is good, is not easy
Deformation is not easy to be damaged, and can also greatly improve moistureproof and mildewproof effect.
As a further improvement on the present invention, also include strengthening bamboo frame in the environment-friendly sheet, the reinforcement bamboo frame is pressed
System is among the environment-friendly sheet, to form the reinforcement of the environment-friendly sheet.Strengthen bamboo by being set in environment-friendly sheet
Frame, is greatly improved the intensity and toughness of sheet material, and bearing capacity greatly increases.
Suppress in raw material in addition to the agronomic crop fibre for accounting for main component, only comprising adhesive, filler and quartz sand,
And do not include formaldehyde in adhesive, filler and quartz sand, because low using the low agronomic crop fibre of water content and water content
Adhesive so that the water content in environment-friendly sheet is relatively low.
A kind of preparation method of environment-friendly sheet provided by the invention, is comprised the following steps：
A, raw material prepare：Prepare agronomic crop fibre, adhesive, filler and quartz sand；
B, raw material is suppressed to prepare：Agronomic crop fibre is mixed, then filler is added and quartz sand continues to stir, finally
Spray into adhesive to continue to stir, ultimately form the compacting raw material for closed compression molding；
C, environment-friendly sheet compression molding：Ready compacting raw material is added to closing by manual or automatic blanking device
HTHP is carried out in formula molding apparatus to be molded to form environment-friendly sheet.
As a further improvement on the present invention, the agronomic crop fibre mixing time is 4-5 minutes；Add the diatomite
It it is 2 minutes with mixing time after the quartz sand, mixing time is 5-8 minutes after spraying into described adhesive.
As a further improvement on the present invention, the adition process that raw material is suppressed in step C is carried out for segmentation, and first paragraph will press
Raw material processed is routed in the mould bottom of closed molding apparatus to form an initial bed, and second segment is placed into bottom by bamboo frame is strengthened
Above the bed of material, lay compacting raw material on bamboo frame is strengthened for the 3rd section and be completely covered until bamboo frame will be strengthened, strengthen bamboo to fill
Space between frame simultaneously forms top stock layer.
As a further improvement on the present invention, the reinforcement bamboo frame includes more cross bars be arrangeding in parallel and be arranged in parallel
More montants, be arranged in a mutually vertical manner between all cross bars and all montants.
As a further improvement on the present invention, forming under the pressure of the compacting raw material in 1000t/m2.
As a further improvement on the present invention, the closed molding apparatus is performed with single compressed stroke, wherein the list
One compression stroke is performed under the draw ratio with 1 to 10.Wherein the compression molded processing is the temperature in Celsius 200 to 220 degree
Lower execution.
Beneficial effects of the present invention are：
1st, the major part in the present invention as compacting raw material uses agronomic crop fibre, and wherein agronomic crop fibre can use
One or more kinds of mixing systems in the crops containing fiber such as rice bar, rape stalk, wheat head bar, cotton stalk, bamboo silk
Into, using agronomic crop fibre as compacting raw material, not only with cost it is cheap the characteristics of, and it is more environmentally-friendly to fall trees
Low-carbon.
2nd, present invention adhesive, filler and quartz sand without formaldehyde of addition in raw material is suppressed, sheet material is when in use
Environment will not be polluted, workers ' health will not also be impacted in process of production, production environment is comfortable.
3rd, the present invention greatly improves the fire resistance and fungicidal properties of sheet material by adding diatomite and quartz sand.
4th, the present invention is by using closed embossing way, and panel density is big, intensity is high, moisture effect is good.
5th, the present invention strengthens bamboo frame by increasing inside sheet material, greatly improves sheet material toughness and bearing capacity.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is environment-friendly sheet preparation flow figure of the present invention；
Fig. 2 is containing the partial sectional view for strengthening bamboo frame in environment-friendly sheet of the present invention.
1- strengthens bamboo frame in figure.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical scheme will be carried out below
Detailed description.Obviously, described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are resulting on the premise of creative work is not made to be owned
Other embodiment, belong to the scope that the present invention is protected.
The invention provides a kind of environment-friendly sheet, the compacting raw material of environment-friendly sheet is by weight percentage by following components structure
Into：Agronomic crop fibre no more than 90%, the adhesive no more than 6%, 1-10% filler and 1-10% quartz sands, farming
Fibres are one or more mixing in the crops containing fiber, and formaldehyde is free of in adhesive and filler.Farming
Fibres can be a kind of crops composition or multiple kinds of crops composition, and crops are not limited to rape straw, water
Rice straw or other any crops with fiber；By the way that one or more crops are mixed, then add a small amount of
Adhesive without formaldehyde, the filler that space between fiber is filled up and the quartz sand for contributing to moisture retardant, so as to be formed
With the formaldehydeless release of environmental protection, environment-friendly sheet moistureproof, mould proof, density is high.Clicked to change in this environment-friendly materials without curing agent, anti-impact
A variety of hazardous solvents such as matter agent, cosolvent and releasing agent.
Preferably, adhesive is MDI ecology adhesives.Because MDI ecologies adhesive is free of formaldehyde, the content of adhesive is used
Amount is few, can be sufficiently mixed no more than 6%, the MDI ecologies adhesive relative to compacting raw material weight percentage with agronomic crop fibre
And filling of the improvement agronomic crop fibre in raw material is suppressed, and because binder content is few, so water content in compacting raw material
It is few.
As an alternative embodiment, filler is diatomite.It is diatomaceous effect not only can with fiberfill fibers it
Between space, and diatomite also have the function that it is mould proof, to ensure that it is mouldy that environment-friendly sheet will not make moist, improve service life.
Specifically, the crops containing fiber include rice bar, rape stalk, wheat head bar, cotton stalk, bamboo silk.
In order to ensure compressing quality and sheet material moistureproof and mildewproof performance, the present invention controls moisture in agronomic crop fibre to contain
Measure as 3-5%.When moisture is high in agronomic crop fibre, the environment-friendly sheet of compacting easily makes moist mouldy, agronomic crop fibre reclaimed water
When dividing content too low, plate forming is influenceed.Using the agronomic crop fibre of 3-5% moistures, it both ensure that raw material was being suppressed
The quantity of steam of release in journey, the problem of can avoiding causing sheet material moisture-sensitive mouldy due to excess moisture again.
Because environment-friendly sheet is using closing compression molding mode, and 200-220 degree high temperature is kept in mold process, so ring
It is very high to protect the density of sheet material, up to 500-1300kg/m3, so environment-friendly sheet density is high, density high intensity is good, is unlikely to deform not
Easily it is damaged, and moistureproof and mildewproof effect can also be greatly improved.
Closed molding apparatus includes mould, compacting raw material is put into mould, the heat on mould is transferred to
On the compacting raw material of position in the inner, the partial heat is used to be heated at high temperature compacting raw material, suppresses and is flowed under raw material high temperature
Change, flowed along dies cavity, and most dies cavity filling is uniform at last；In order to produce the sheet material of different surfaces moulding, in mould
Required groove can also be set on tool, it is compressing after plate surface there are various moulding, can be processed by one-shot forming
Surface thickness is different, surface has moulding, and various special-shaped sheet materials, and this kind of sheet material of processing is usually used in Furniture manufacture.
Suppress in raw material in addition to the agronomic crop fibre for accounting for main component, only comprising adhesive, filler and quartz sand,
And do not include formaldehyde in adhesive, filler and quartz sand, because low using the low agronomic crop fibre of water content and water content
Adhesive so that the water content in environment-friendly sheet is relatively low, the low moistureproof and mildewproof effect of water content is good in environment-friendly sheet.
As another optional embodiment, when environment-friendly sheet is used for packed and transported bracket, gone back in environment-friendly sheet
It is provided with and strengthens bamboo frame 1, strengthens bamboo frame 1 and be compressed among environment-friendly sheet, to form the reinforcement of environment-friendly sheet.By
Set in environment-friendly sheet and strengthen bamboo frame 1, be greatly improved the intensity and toughness of sheet material, bearing capacity greatly increases.
As shown in figure 1, a kind of preparation method of environment-friendly sheet provided by the invention, is comprised the following steps：
A, raw material prepare：Prepare agronomic crop fibre, adhesive, filler and quartz sand；
B, raw material is suppressed to prepare：Agronomic crop fibre is mixed, then filler is added and quartz sand continues to stir, finally
Spray into adhesive to continue to stir, ultimately form the compacting raw material for closed compression molding；
C, environment-friendly sheet compression molding：Ready compacting raw material is added to closing by manual or automatic blanking device
HTHP is carried out in formula molding apparatus to be molded to form environment-friendly sheet.
In raw material preparation process, agronomic crop fibre need to first carry out chopping processing, the length of agronomic crop fibre after chopping
Then between 5-10mm processing agronomic crop fibre is dried again, and ensure the water content control of agronomic crop fibre in control
Between 3-5%, specific cutting method and drying means are common method, are not described herein.
In raw material preparation process is suppressed, it is as follows that each constituent mixes the time being stirred：Agronomic crop fibre
Mixing time is 4-5 minutes；Mixing time is 2 minutes after adding diatomite and quartz sand, and mixing time is after spraying into adhesive
5-8 minutes.
As shown in Fig. 2 carrying the environment-friendly sheet for strengthening bamboo frame 1 in order to produce, the addition of raw material is suppressed in step C
Journey is carried out for segmentation, and first paragraph is routed to raw material is suppressed in the mould bottom of closed molding apparatus to form an initial bed,
Second segment is placed into bamboo frame 1 is strengthened above initial bed, and the 3rd section is laid compacting raw material until will strengthen bamboo on bamboo frame 1 is strengthened
Frame 1 is completely covered, to fill the space strengthened between bamboo frame 1 and form top stock layer.
Strengthen the setting of bamboo frame 1 so that contain the reinforcement bamboo frame 1 in the environment-friendly sheet finally suppressed, make environment-friendly sheet whole
The bearing capacity and toughness of body are stronger, while can also prevent the generation of the phenomenon of environment-friendly sheet cracking, and two are injected into mould
Secondary compacting raw material, and be put at this between twice and strengthen bamboo frame 1, it is ensured that the reinforcement bamboo frame 1 in the sheet material finally given is located at
Inside sheet material, ensure sheet material appearance looks elegant.Strengthen bamboo frame 1 to place using manual mode, it is more including be arrangeding in parallel to strengthen bamboo frame 1
Root cross bar and more montants be arrangeding in parallel, are arranged in a mutually vertical manner between all cross bars and all montants.
In order to ensure the density of environment-friendly sheet, pressure of the closed molding apparatus when suppress raw material compacting is
1000t/m2。
Closed molding apparatus is performed with single compressed stroke, and wherein the single compressed stroke is the draw ratio with 1 to 10
Lower execution.Wherein the compression molded processing is performed at a temperature of being spent Celsius 200 to 220.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
- A kind of 1. environment-friendly sheet, it is characterised in that：The compacting raw material of the environment-friendly sheet is by weight percentage by following components Form：Agronomic crop fibre no more than 90%, the adhesive no more than 6%, 1-10% filler and 1-10% quartz sands, institute It is one or more mixing in the crops containing fiber to state agronomic crop fibre, in described adhesive and the filler Without formaldehyde.
- 2. environment-friendly sheet according to claim 1, it is characterised in that：Described adhesive is MDI ecology adhesives.
- 3. environment-friendly sheet according to claim 1, it is characterised in that：The filler is diatomite.
- 4. environment-friendly sheet according to claim 1, it is characterised in that：The crops containing fiber include rice bar, Rape stalk, wheat head bar, cotton stalk, bamboo silk.
- 5. environment-friendly sheet according to claim 1, it is characterised in that：Moisture is 3-5% in the agronomic crop fibre.
- 6. environment-friendly sheet according to claim 1, it is characterised in that：The density of the environment-friendly sheet is 500-1300kg/ m3。
- 7. environment-friendly sheet according to claim 1, it is characterised in that：Also include strengthening bamboo frame, institute in the environment-friendly sheet State reinforcement bamboo frame to be compressed among the environment-friendly sheet, to form the reinforcement of the environment-friendly sheet.
- A kind of 8. preparation method of environment-friendly sheet, it is characterised in that：Comprise the following steps：A, raw material prepare：Prepare agronomic crop fibre, adhesive, filler and quartz sand；B, raw material is suppressed to prepare：Agronomic crop fibre is mixed, then filler is added and quartz sand continues to stir, finally spray into Adhesive continues to stir, and ultimately forms the compacting raw material for closed compression molding；C, environment-friendly sheet compression molding：Ready compacting raw material is added to closed mould by manual or automatic blanking device HTHP is carried out in pressure equipment to be molded to form environment-friendly sheet.
- 9. the preparation method of environment-friendly sheet according to claim 7, it is characterised in that：The agronomic crop fibre mixing time For 4-5 minutes；Mixing time is 2 minutes after adding the diatomite and the quartz sand, when being stirred after penetrating described adhesive Between be 5-8 minutes.
- 10. the preparation method of environment-friendly sheet according to claim 7, it is characterised in that：The addition of raw material is suppressed in step C Process is carried out for segmentation, and first paragraph is routed to raw material is suppressed in the mould bottom of closed molding apparatus to form a bed material Layer, second segment are placed into bamboo frame is strengthened above initial bed, and the 3rd section is laid compacting raw material until will strengthen on bamboo frame is strengthened Bamboo frame is completely covered, to fill the space strengthened between bamboo frame and form top stock layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711007140.1A CN107891503A (en) | 2017-10-24 | 2017-10-24 | A kind of environment-friendly sheet and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711007140.1A CN107891503A (en) | 2017-10-24 | 2017-10-24 | A kind of environment-friendly sheet and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
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| CN107891503A true CN107891503A (en) | 2018-04-10 |
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| CN201711007140.1A Pending CN107891503A (en) | 2017-10-24 | 2017-10-24 | A kind of environment-friendly sheet and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108969284A (en) * | 2018-07-27 | 2018-12-11 | 任大杰 | A kind of the manufacture raw material and method of ecological environment-friendly type inner and outer coffin |
| CN109666308A (en) * | 2018-12-21 | 2019-04-23 | 许艺铧 | A kind of straw building plate and its manufacturing method |
| CN115194907A (en) * | 2022-07-08 | 2022-10-18 | 大亚人造板集团有限公司 | E NF Production process of grade fiber board |
| CN115366215A (en) * | 2022-09-07 | 2022-11-22 | 德华兔宝宝装饰新材股份有限公司 | Straw formaldehyde-free composite board and production process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108969284A (en) * | 2018-07-27 | 2018-12-11 | 任大杰 | A kind of the manufacture raw material and method of ecological environment-friendly type inner and outer coffin |
| CN109666308A (en) * | 2018-12-21 | 2019-04-23 | 许艺铧 | A kind of straw building plate and its manufacturing method |
| CN115194907A (en) * | 2022-07-08 | 2022-10-18 | 大亚人造板集团有限公司 | E NF Production process of grade fiber board |
| CN115366215A (en) * | 2022-09-07 | 2022-11-22 | 德华兔宝宝装饰新材股份有限公司 | Straw formaldehyde-free composite board and production process thereof |
| CN115366215B (en) * | 2022-09-07 | 2023-12-12 | 德华兔宝宝装饰新材股份有限公司 | Straw formaldehyde-free composite board and production process thereof |
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Application publication date: 20180410 |